intergovernmental

Intergovernmental organization BIPM outlines historic changes to the International System of Units, or the SI

Today, May 20, is World Metrology Day, commemorating the anniversary of the signing of the Metre Convention in 1875.

This treaty provides the basis for a coherent measurement system worldwide that underpins scientific discovery and innovation, industrial manufacturing and international trade, as well as the improvement of the quality of life and the protection of the global environment.